Any high schoolers here? lol

Which of the following is the molecular formula for a simple sugar? a. cooh b. h2o c. oh d. c6h12o6

Analyze the reaction to determine whether the reaction is exothermic or endothermic. explain your reasoning.

Acertain atom has 22 protons and 19 electrons. this atom loses an electron. the net charge on the atom is now 4+1+01-4-. if this same atom with 22 protons and 19 electrons were to gain 3 electrons, the net charge on the atom would be 3+2+02-3-.